FLOWER, R.J., K. KEATINGS, M.A. HAMDAN & F.A. HASSAN 2013 (online Aug 29) Stephanodiscus Ehr. species from Holocene sediments in the Faiyum Depression (Middle Egypt) Phytotaxa 127(1): 66-80, 31 figs., 2 tables incl Stephanodiscus neoaegypticus and S. neoaegypticus var. fekrii |